Guitar



FIG. 1 is a front elevational view of a guitar showing my invention;

FIG. 2 is rear elevational view thereof;

FIG. 3 is a left side elevational view thereof; and,

FIG. 4 is a front perspective view thereof.

The broken line showing of guitar headstock pegs is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a guitar, as shown and described. 